According to a survey released Wednesday by the Pew Research Center, 54 percent of Americans disapprove of the 2010 Affordable Care Act compared with 44 percent who approve of the law. While approval showed a modest increase since the law's passage, disapproval has increased by 10 percentage points. The divide has also become more pronounced since July, when 48 percent of respondents said they approved of the law and 49 percent said they disapproved.

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WASHINGTON, DC - MARCH 04: Ryan Burrows, right, protests with others that are not in support of the portions of the Affordable Care Act on which the Supreme Court of the United States was hearing arguments on Wednesday March 04, 2015 in Washington, DC. (Photo by Matt McClain/ The Washington Post via Getty Images)

Protestors hold placards challenging 'Obamacare' outside of the US Supreme Court on March 4, 2015 in Washington, DC. The US Supreme Court heard a second challenge to US President Barack Obama's Affordable Care Act. The US Supreme Court faces a momentous case Wednesday on the sweeping health insurance reform law that President Barack Obama wants to leave as part of his legacy. The question before the court is whether the seven million people or more who subscribed via the government's website can obtain tax subsidies that make the coverage affordable. A ruling is expected in June. AFP PHOTO/MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

Protestors hold placards challenging 'Obamacare' outside of the US Supreme Court on March 4, 2015 in Washington, DC. The US Supreme Court faces a momentous case Wednesday on the sweeping health insurance reform law that President Barack Obama wants to leave as part of his legacy. The question before the court is whether the seven million people or more who subscribed via the government's website can obtain tax subsidies that make the coverage affordable. A ruling is expected in June. AFP PHOTO/MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

Demonstrators from Doctors for America in support of U.S. President Barack Obama's health-care law, Obamacare, hold signs while marching in front of the U.S. Supreme Court in Washington, D.C., U.S., on Wednesday, March 4, 2015. A U.S. Supreme Court argument over Obamacare's tax subsidies divided the justices along ideological lines, potentially leaving two pivotal justices to decide the law's fate. Photographer: Andrew Harrer/Bloomberg via Getty Images

Anti-abortion demonstrators hold signs during a Priests for Life protest outside the US Court of Appeals for the DC Circuit Court as the Court hears the oral arguments in the 'Priests for Life v. US Department of Health and Human Services (HHS)' case in Washington, DC, on May 8, 2014. The case centers around the HHS mandate in the Affordable Care Act, known as Obamacare, that religious organizations must cover contraceptions and abortion as part of their health insurance benefits, even if that goes against the organization's religious beliefs. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

Anti-abortion demonstrators hold signs during a Priests for Life protest outside the US Court of Appeals for the DC Circuit Court as the Court hears the oral arguments in the 'Priests for Life v. US Department of Health and Human Services (HHS)' case in Washington, DC, on May 8, 2014. The case centers around the HHS mandate in the Affordable Care Act, known as Obamacare, that religious organizations must cover contraceptions and abortion as part of their health insurance benefits, even if that goes against the organization's religious beliefs. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

Anti-abortion demonstrators hold signs during a Priests for Life protest outside the US Court of Appeals for the DC Circuit Court as the Court hears the oral arguments in the 'Priests for Life v. US Department of Health and Human Services (HHS)' case in Washington, DC, on May 8, 2014. The case centers around the HHS mandate in the Affordable Care Act, known as Obamacare, that religious organizations must cover contraceptions and abortion as part of their health insurance benefits, even if that goes against the organization's religious beliefs. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

Anti-abortion demonstrators hold signs stating they regret their abortions during a Priests for Life protest outside the US Court of Appeals for the DC Circuit Court as the Court hears the oral arguments in the 'Priests for Life v. US Department of Health and Human Services (HHS)' case in Washington, DC, on May 8, 2014. The case centers around the HHS mandate in the Affordable Care Act, known as Obamacare, that religious organizations must cover contraceptions and abortion as part of their health insurance benefits, even if that goes against the organization's religious beliefs. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

DORAL, FL - APRIL 23: Joyce Zaritsky, Bob Williams, Serena Perez and Mayte Canino (L-R) show their support for the Affordable Care Act in front of the office of U.S. Rep. Mario Diaz-Balart and Sen. Marco Rubio (R-FL) on April 23, 2014 in Doral, Florida. The protesters wanted to ask the politicians if they still want to repeal their constituents health care now that more than 8 million Americans have signed up for health insurance under the Affordable Care Act. (Photo by Joe Raedle/Getty Images)

A demonstrator in support of U.S. President Barack Obama's health-care law contraception requirement holds up a sign outside the U.S. Supreme Court in Washington, D.C., U.S., on Tuesday, March 25, 2014. Hobby Lobby, a family-owned business that says it looks to the Bible for guidance, is seeking a religious exemption from the requirement that employers cover birth control as part of worker-insurance plans. Photographer: Andrew Harrer/Bloomberg via Getty Images

A demonstrator in support of U.S. President Barack Obama's health-care law contraception requirement holds up a sign outside the U.S. Supreme Court in Washington, D.C., U.S., on Tuesday, March 25, 2014. Hobby Lobby, a family-owned business that says it looks to the Bible for guidance, is seeking a religious exemption from the requirement that employers cover birth control as part of worker-insurance plans. Photographer: Andrew Harrer/Bloomberg via Getty Images

Demonstrators in support of U.S. President Barack Obama's health-care law contraception requirement hold up a sign outside the U.S. Supreme Court in Washington, D.C., U.S., on Tuesday, March 25, 2014. Hobby Lobby, a family-owned business that says it looks to the Bible for guidance, is seeking a religious exemption from the requirement that employers cover birth control as part of worker-insurance plans. Photographer: Andrew Harrer/Bloomberg via Getty Images

Demonstrator Alan Hoyle holds a bible as he stands outside the U.S. Supreme Court in Washington, D.C., U.S., on Tuesday, March 25, 2014. Hobby Lobby, a family-owned business that says it looks to the Bible for guidance, is seeking a religious exemption from the requirement that employers cover birth control as part of worker-insurance plans. Photographer: Andrew Harrer/Bloomberg via Getty Images

Demonstrators in support of U.S. President Barack Obama's health-care law contraception requirement hold up signs outside the U.S. Supreme Court in Washington, D.C., U.S., on Tuesday, March 25, 2014. Hobby Lobby, a family-owned business that says it looks to the Bible for guidance, is seeking a religious exemption from the requirement that employers cover birth control as part of worker-insurance plans. Photographer: Andrew Harrer/Bloomberg via Getty Images

Demonstrators opposed to U.S. President Barack Obama's health-care law contraception requirement hold up signs outside the U.S. Supreme Court in Washington, D.C., U.S., on Tuesday, March 25, 2014. Hobby Lobby, a family-owned business that says it looks to the Bible for guidance, is seeking a religious exemption from the requirement that employers cover birth control as part of worker-insurance plans. Photographer: Andrew Harrer/Bloomberg via Getty Images

Demonstrators opposed to U.S. President Barack Obama's health-care law contraception requirement hold up signs outside the U.S. Supreme Court in Washington, D.C., U.S., on Tuesday, March 25, 2014. Hobby Lobby, a family-owned business that says it looks to the Bible for guidance, is seeking a religious exemption from the requirement that employers cover birth control as part of worker-insurance plans. Photographer: Andrew Harrer/Bloomberg via Getty Images

Demonstrators in support of U.S. President Barack Obama's health-care law contraception requirement hold a sign outside the U.S. Supreme Court in Washington, D.C., U.S., on Tuesday, March 25, 2014. Hobby Lobby, a family-owned business that says it looks to the Bible for guidance, is seeking a religious exemption from the requirement that employers cover birth control as part of worker-insurance plans. Photographer: Andrew Harrer/Bloomberg via Getty Images

MIAMI, FL - SEPTEMBER 20: Deborah Dion (L), Hattie Coleman and other protesters gather in the office of Florida State Rep. Manny Diaz as they protest his stance against the expansion of healthcare coverage on September 20, 2013 in Miami, Florida. As the protest took place, the Republican led House in Washington, D.C. by a 230-189 tally passed a short-term government spending plan that would eliminate all funding for 'Obamacare.' The Florida State government is also working against the Affordable Care Act by refusing to set up its own health care exchanges and they also have highlighted concerns about the navigators, federally funded workers who will help enroll people in health plans. (Photo by Joe Raedle/Getty Images)

Anti-abortion protesters pray outside the US Supreme Court on the third day of oral arguements over the constitutionality of the Patient Protection and Affordable Care Act on March 28, 2012 in Washington, DC. The 26 states challenging the law argue that Obama's Affordable Care Act must be completely repealed if the requirement that all Americans buy health insurance -- known as the 'individual mandate' -- is found to be unconstitutional. AFP PHOTO/MLADEN ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

A masked pro-Obamacare demonstrator stands outside the US Supreme Court June 25, 2012, in Washington, DC, as they await the court's ruling on the Healthcare Reform Law. The court announced the decision on healthcare will not happen before June 28. AFP PHOTO/Jim Watson (Photo credit should read JIM WATSON/AFP/GettyImages)

Anti-abortion protesters pray outside the US Supreme Court on the third day of oral arguements over the constitutionality of the Patient Protection and Affordable Care Act on March 28, 2012 in Washington, DC. The 26 states challenging the law argue that Affordable Care Act must be completely repealed if the requirement that all Americans buy health insurance -- known as the 'individual mandate' -- is found to be unconstitutional. AFP PHOTO/MLADEN ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

UNITED STATES â MARCH 27: Rep. Michele Bachmann, R-Minn., speaks during the Tea Party Patriots rally protesting the Affordable Care Act in front of the Supreme Court as the court hears arguments on the health care reform bill on Tuesday, March 27, 2012. (Photo By Bill Clark/CQ Roll Call)

UNITED STATES â MARCH 27: Tea Party Patriots supporters hold signs protesting the Affordable Care Act in front of the Supreme Court as the court hears arguments on the health care reform bill on Tuesday, March 27, 2012. (Photo By Bill Clark/CQ Roll Call)

Demonstrators display signs during a protest on West Florissant Avenue in Ferguson, Missouri on August 18, 2014. Police fired tear gas in another night of unrest in a Missouri town where a white police officer shot and killed an unarmed black teenager, just hours after President Barack Obama called for calm. AFP PHOTO / Michael B. Thomas (Photo credit should read Michael B. Thomas/AFP/Getty Images)

Pakistan protesters from the Jamaat-e-Islami party gather around a protester dressed as US President Barack Obama effigy during a pro-Palestinian demonstration against Israel's military campaign in Gaza, in Karachi on August 17, 2014. Indirect talks between Israelis and Palestinians for a long-term truce in Gaza resumed on August 17, 2014, with just over a day left before a temporary ceasefire is set to expire, a Palestinian official said. AFP PHOTO/Rizwan TABASSUM (Photo credit should read RIZWAN TABASSUM/AFP/Getty Images)

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The survey was conducted April 12 to 19, among 2,008 adults. Respondents answered questions about the law's personal impacts as well as its expected effects going forward.

The findings showed 31 percent of respondents say the health care law has had a mostly negative effect on them and their families, while 23 percent say the result has been positive and 45 percent say they have seen little change. Pew noted that the percentage of respondents saying they have seen little change has declined in the last three years but that the law's "personal impact" has consistently been more negative than positive in its polling.

Perception of the law was deeply divided along party lines. The survey found that 78 percent of Democrats approve, compared with only 9 percent of Republicans. Republican approval of the law had risen from 11 percent in February last year to 18 percent last July.

Republican views of Obamacare became more negative after the exchanges, or marketplaces, experienced technical glitches, making it difficult for Americans to purchase tax-subsidized insurance. Though the website has improved, opinions from Republicans have not, the survey shows.

Differences in opinion by race also were apparent. Whites disapprove of the law by a nearly 2-to-1 margin – 64 percent approve while 33 percent disapprove – and blacks overwhelmingly support it, showing an approval score of 83 percent. The majority of Latinos, 57 percent, also approve of the law.

The survey found that people with lower family incomes had more favorable views of the Affordable Care Act. About a third of those with family incomes of $30,000 or less say the law's effect on their lives and the lives of their families was mostly positive, compared with 18 percent of those with higher family incomes. Under the law, people with lower incomes in some states have the option to enroll in low- or no-cost government coverage, under the Medicaid program.